作物害蟲 天敵으로서의 무당벌레와 거미類의 生態에 關한 硏究 = Ecological Studies on Ladybeetles and Spiders as a Natural Enemy to Crops Insects Pest

다국어 초록 (Multilingual Abstract)

This experiment was conducted to study the local distribution, predation amounts and rearing methods by antifinial diets of predatory ladybeetles as a natural enemy to crops insect pests. And it was also studied the distribution phase in the fields of different crops, dominant species in earth crop and the seasonal fluctuation of spiders. The results obtained are summarised as follows ;
1.The Ratio of Coccinella axyridis PALLS among predatory ladybeetles was the highest, 98.77 % in Chungbug province.
2.Dark treatment more than 3 hours a day effected to prolong the pupal period of ladybeetles, especially 5 hours a day prolonged remarkably the pupal period.
3.Compare with larva, the adult of the ladybeetles preyed more aphids. There was no significiant difference in predation amounts of aphids among species, but Coccinella septempunctata preyed the most aphids.
4.Among artificial diets used for roaring ladybeetles, silkworm pupae, honeybees, glucose, milk and egg were favourable for the existence ratio of adults, and milk, honeybees, casein, sugar and ager were favourable for existence term, but anchovy powder was unfavourable for existence ratio and term. The Existence ratio of larva was high in the plots mixed with honeybees, silkworm pupa, milk, agar, ebiose and amino acid.
5.The Spiders inhabited in mulberry fields were 13 families, 38 genuses, 61 species in Gyeong-gi province, 10 families, 38 genuses, 61 species in Chungnam and 16 families, 46 genuses, 78 species in Chungbug. In Chungbug province, 4 families, 5 genuses and 9 species of spiders inhabited in tobacco fields and 2 families, 2 genuses arid 4 species in redpepper fields.
6.The Dominant spider species was Erigonidium graminicola, Pirata subpiraticus, Misumenops tricuspidatus in mulberry fields, and was Pardosa astrigera in tobacco and red-pepper fields.
7.In the seasonal distribution of dominant species in mulberry fields, Erigonidium graminicola and Pirata subpiraticus had breeded almost same ratio from early June to September, and Misumenops tricuspidatus had breeded increasingly from June to early August and in the middle of September.
8.It was investigated that spiders prey upon mainly plant hoppers, leaf hoppers, aphids, tobacco budworm and larva of leaf rollers of species.

목차 (Table of Contents)

• Ⅰ.緖論
• Ⅱ.硏究史
• Ⅲ.實驗材料 및 方法
• 1.捕食性 무당벌레의 分布調査
• 2.무당벌레의 ?期中 暗處理實驗
• 3.무당벌레의 種間捕食量 比較實驗
• 4.Coiccinella axyridis의 成蟲과 幼蟲의 捕食量
• 5.人工食餌에 의한 무당벌레 飼育實驗
• 6.거미類의 分布調査
• Ⅳ.실험결과 및 고찰
• 1.捕食性 무당벌레의 分布
• 2.무당벌레의 ?期中 暗處理效果
• 3.무당벌레의 種間 捕食量比較
• 4.Coiccinella axyridis의 成蟲과 幼蟲의 捕食量比較
• 5.人工食餌에 의한 飼育
• 6.거미類의 分布
• Ⅴ.綜合考察
• Ⅵ.摘要